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(11)

EP 3 987 738 A1

(12)

(43) Date of publication: 27.04.2022 Bulletin 2022/17 (21) Application number: 19733728.0 (22) Date of filing: 24.06.2019

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) H04L 29/14(2006.01) (52) Cooperative Patent Classification (CPC): H04L 65/1073; H04L 65/1016; H04L 65/1006; H04L 65/1046; H04L 69/40; H04L 65/80; H04L 67/306 (86) International application number: PCT/EP2019/066624 (87) International publication number: WO 2020/259791 (30.12.2020 Gazette 2020/53)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Nokia Solutions and Networks Oy 02610 Espoo (FI)	(72) Inventor: NAYAK, Ashok Kumar Karnataka Bangalore 560043 (IN) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karakaari 7 02610 Espoo 02610 Espoo (FI)